Why do i get invalid format pdf while opening book

[Android Central Question]

When i type book name on google to give this book in pdf drive.. When i got their link and click on that link their reply to me that their is an invalid format i downliad pdf reader but no use now give me a suggestion what should i do

 

[SpookDroid]

If you download the file to a PC does it open? Perhaps the link is just directing to an invalid file that is just made to look like a PDF (which is already shady enough and might be a virus, so proceed with caution).